my buddy is running stock toyota axles on his toy with stock birfs and 38x16'' wide tsl's and with a heavy foot. he has never broke a birf. and i have owned many toyotas and ive never broke a birf. you just have to know how to drive not to break stuff. that means not turning it at full tilt and hammering down on it! i have been thinking about doing this swap to my ranger just for the simple fact that i know my way around a toyota more than a ranger.! thanks bones for telling how you did your swap i might do that to my ranger now.